Publications

Publications Found: 1437

Modeling Energy And Carbon Fluxes In A Heterogeneous Oak Woodland: A Three-Dimensional Approach
Kobayashi, H., Baldocchi, D. D., Ryu, Y., Chen, Q., Ma, S., Osuna, J. L., Ustin, S. L.

Most land surface and ecosystem models assume that a vegetated canopy can be abstracted as a turbid medium when such models compute mass, energy, and carbon exchange. However, those models fail to simulate radiation environments in heterogeneous landscapes. This study aims to couple a spatially explicit three-dimensional (3D) shortwave …


Journal: Agricultural And Forest Meteorology, Volume 152: 83-100 (2012). DOI: 10.1016/j.agrformet.2011.09.008 Sites: US-Ton

Carbon, Water, And Heat Flux Responses To Experimental Burning And Drought In A Tallgrass Prairie
Fischer, M. L., Torn, M. S., Billesbach, D. P., Doyle, G., Northup, B., Biraud, S. C.


Journal: Agricultural And Forest Meteorology, Volume 166-167: 169-174 (2012). DOI: 10.1016/j.agrformet.2012.07.011 Sites: US-ARb

Carbon Dioxide Exchange Over Multiple Temporal Scales In An Arid Shrub Ecosystem Near La Paz, Baja California Sur, Mexico
Bell, T. W., Menzer, O., Troyo-Diéquez, E., Oechel, W. C.

Arid environments represent 30% of the global terrestrial surface, but are largely under-represented in studies of ecosystem carbon flux. Less than 2% of all FLUXNET eddy covariance sites exist in a hot desert climate. Long-term datasets of these regions are vital for capturing the seasonal and interannual variability that occur …


Journal: Global Change Biology, Volume 18 (8): 2570-2582 (2012). DOI: 10.1111/j.1365-2486.2012.02720.x Sites: MX-Lpa

The Fundamental Equation Of Eddy Covariance And Its Application In Flux Measurements
Gu, L., Massman, W. J., Leuning, R., Pallardy, S. G., Meyers, T., Hanson, P. J., Riggs, J. S., Hosman, K. P., Yang, B.


Journal: Agricultural And Forest Meteorology, Volume 152: 135-148 (2012). DOI: 10.1016/j.agrformet.2011.09.014 Sites: US-MOz

Modelling Contrasting Responses Of Wetland Productivity To Changes In Water Table Depth
Grant, R.F., Desai, A.R.,  Sulman, B.N.

Responses of wetland productivity to changes in water table depth (WTD)
are controlled by complex interactions among several soil and plant
processes, and hence are site-specific rather than general in nature.
Hydrological controls on wetland productivity were studied by
representing …


Journal: Biogeosciences, Volume 9 (11): 4215-4231 (2012). DOI: 10.5194/bg-9-4215-2012 Sites: US-Los

Seven-Year Trends Of CO2 Exchange In A Tundra Ecosystem Affected By Long-Term Permafrost Thaw
Trucco, C., Schuur, E. A., Natali, S. M., Belshe, E. F., Bracho, R., Vogel, J.

Arctic warming has led to permafrost degradation and ground subsidence, created as a result of ground ice melting. Frozen soil organic matter that thaws can increase carbon (C) emissions to the atmosphere, but this can be offset in part by increases in plant growth. The balance of plant and microbial processes, and how this balance …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G2): n/a-n/a (2012). DOI: 10.1029/2011jg001907 Sites: US-EML

Carbon, Water, And Heat Flux Responses To Experimental Burning And Drought In A Tallgrass Prairie
Fischer, M. L., Torn, M. S., Billesbach, D. P., Doyle, G., Northup, B., Biraud, S. C.


Journal: Agricultural And Forest Meteorology, Volume 166-167: 169-174 (2012). DOI: 10.1016/j.agrformet.2012.07.011 Sites: US-ARb, US-ARc

Impact of Hydrological Variations on Modeling of Peatland CO2 Fluxes: Results From the North American Carbon Program Site Synthesis
Sulman, B. N., Desai, A. R., Schroeder, N. M., Ricciuto, D., Barr, A., Richardson, A. D., Flanagan, L. B., Lafleur, P. M., Tian, H., Chen, G., Grant, R. F., Poulter, B., Verbeeck, H., Ciais, P., Ringeval, B., Baker, I. T., Schaefer, K., Luo, Y., Weng, E.

Northern peatlands are likely to be important in future carbon cycle-climate feedbacks due to their large carbon pools and vulnerability to hydrological change. Use of non-peatland-specific models could lead to bias in modeling studies of peatland-rich regions. Here, seven ecosystem models were used to simulate CO2fluxes …


Journal: Journal Of Geophysical Research: Biogeosciences, Volume 117 (G01031): n/a-n/a (2012). DOI: 10.1029/2011JG001862 Sites: US-Los

A Comparison Of Three Methods To Estimate Evapotranspiration In Two Contrasting Loblolly Pine Plantations: Age-Related Changes In Water Use And Drought Sensitivity Of Evapotranspiration Components
Domec, J., Sun, G., Noormets, A., Gavazzi, M. J., Treasure, E. A., Cohen, E., Swenson, J. J., McNulty, S. G., King, J. S.

Increasing variability of rainfall patterns requires detailed understanding of the pathways of water loss from ecosystems to optimize carbon uptake and management choices. In the current study we characterized the usability of three alternative methods of different rigor for quantifying stand-level evapotranspiration (ET), partitioned …


Journal: Forest Science, Volume 58 (5): 497-512 (2012). DOI: 10.5849/forsci.11-051 Sites: US-NC1, US-NC2

Using Model-Data Fusion To Interpret Past Trends, And Quantify Uncertainties In Future Projections, Of Terrestrial Ecosystem Carbon Cycling
Keenan, T. F., Davidson, E., Moffat, A. M., Munger, W., Richardson, A. D.

Uncertainties in model projections of carbon cycling in terrestrial ecosystems stem from inaccurate parameterization of incorporated processes (endogenous uncertainties) and processes or drivers that are not accounted for by the model (exogenous uncertainties). Here, we assess endogenous and exogenous uncertainties using a model-data …


Journal: Global Change Biology, Volume 18 (8): 2555-2569 (2012). DOI: 10.1111/j.1365-2486.2012.02684.x Sites: US-Ha1